APA (7e ed.) Bronvermelding

Não informado. (1956). Research for farmers. Department of Agriculture.

Chicago (17e ed.) Bronvermelding

Não informado. Research for Farmers. Ottawa: Department of Agriculture, 1956.

MLA (8e ed.) Bronvermelding

Não informado. Research for Farmers. Department of Agriculture, 1956.

Let op: Deze citaties zijn niet altijd 100% accuraat.